I found the data quite awkward to work with so made an adjustment of the row headers on the Work Flow worksheet to match the row headers on the Monthly Income. This could be done the other way around as long as the headers match exactly. In addition, I filled down the dates on the Monthly Income worksheet and hid the dates added by formatting the text as white. The column headers with the months I edited so that there was a consistent presentation of the months and not a mix of full month names and abbreviations. Doing the above allows the use of INDEX and MATCH to extract the values for the months going across.
Enter this formula in 'Monthly Income'!H2 and fill down then replace the formula in the column for the rows titled "Total: this is your Base for this month" with the amount.
Formula:
=IFERROR(INDEX('Work Flow'!$F$2:$Q$10,MATCH('Monthly Income'!B2,'Work Flow'!$E$2:$E$10,0),MATCH(TEXT(DATE(YEAR(G1),MONTH(G1),DAY(G1)),"mmm"),'Work Flow'!$F$1:$Q$1,0)),"")
Bookmarks